Novel antimony crystal recovery device

Abstract

The utility model provides a novel antimony crystal recovery device which is a hollow closed container, an antimony solution to be crystallized is filled in the hollow closed container, a rotating motor penetrates through the wall surface of the hollow closed container and then drives a vertical connecting rod to horizontally rotate, and a horizontal stirring rod is connected with the vertical connecting rod and extends below the liquid level; an aeration disc is coaxially arranged below the vertical connecting rod, is supported by one end of an aeration pipe extending from the bottom of the device and is communicated with the aeration pipe; the other end of the aeration pipe penetrates out of the device and then is communicated with a gas outlet of a water-gas dual-purpose pump; one end of a raffinate return pipe is communicated with the raffinate water outlet, and the other end of the raffinate return pipe is communicated with the raffinate water inlet; a residual liquid return pipe is also communicated with a water inlet and a water outlet of the water-gas dual-purpose pump; a plurality of aeration holes are formed in the vertical side wall of the aeration disc. According to the device, the horizontal stirring rod increases the horizontal and transverse fluidization process through horizontal stirring and horizontal and transverse aeration of the aeration air disc, so that the crystallization efficiency is improved, and the problem of insufficient reaction in the longitudinal fluidization process of a traditional fluidization device is solved.

Description

Technical Field

[0001] The invention belongs to the field of crystal separation, and in particular relates to a novel antimony crystal recovery device. Background Art

[0002] Nowadays, there are many types of antimony-containing wastewater, such as mining and beneficiation wastewater, printing and dyeing wastewater, antimony-containing soil leaching liquid, etc. However, antimony wastewater is usually complex and toxic, and the emission standards are extremely strict, which brings great difficulty to its treatment. The antimony-containing leaching wastewater generally has a complex composition, and a large number of complex heavy metals will form stable metal complexes with the leaching agent, so the treatment of the leaching wastewater is difficult. At present, the commonly used treatment method for antimony-containing soil leaching liquid is coagulation and precipitation. However, studies have shown that the coagulation and precipitation method can achieve a higher removal rate for antimony in soil leaching liquid, but this method requires the addition of a large amount of coagulant and produces a large amount of antimony-containing sludge, which is difficult to dispose of; the traditional chemical precipitation method has the disadvantages of requiring the addition of a large amount of precipitation agent, cumbersome process flow and easy to produce secondary pollution, and at the same time cannot meet the requirements of resource utilization of heavy metal wastewater.

[0003] In addition, the existing antimony crystal recovery device draws on other crystallization reactors, using spiral, black pool, Amsterdam and Warden types, among which the Amsterdam reactor is the most widely used reactor. However, these reactors are not optimized according to the characteristics of antimony crystal products, and have problems such as difficult fluidization, low reaction efficiency, long production cycle, and high energy consumption. In addition, this traditional device usually has the following defects:

[0004] 1. Lack of automatic control and online monitoring functions, and insufficient intelligent operation;

[0005] 2. In traditional devices, the temperature, pH value, solution concentration and other parameters in the reaction process may not be accurately controlled, resulting in large fluctuations in product quality and difficulty in stable control. Traditional devices may have high energy consumption, such as high energy consumption of stirring equipment and heating equipment, which increases production costs;

[0006] 3. Traditional antimony crystal recovery devices may have environmental pollution problems such as incomplete wastewater treatment, low purity of crystal products, and difficulty in controlling crystal forms, which affect the safety and health of the production environment and the surrounding environment;

[0007] 4. Traditional devices may require frequent manual intervention and maintenance, are complex to operate, and require high professional skills, which reduces production efficiency and safety.

[0008] Based on the above defects of the existing technology, it can be concluded that the key technical challenges that the new antimony crystallization recovery and utilization device needs to solve are to achieve intelligent control and optimization of the reaction process, reduce energy consumption and environmental pollution, improve production efficiency and product quality, and reduce operating and maintenance costs.

[0009] Therefore, a new antimony recovery device with the characteristics of automated control, intelligent monitoring, energy saving and environmental protection, and high recovery efficiency needs to be developed urgently. Summary of the invention

[0010] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a new antimony recovery device which has the characteristics of automatic control, intelligent monitoring, energy saving and environmental protection, and high recovery efficiency.

[0011] To achieve the above-mentioned purpose and other related purposes, the present invention provides a novel antimony crystallization recovery device, which is a hollow closed container, in which the antimony solution to be crystallized is loaded, and is characterized in that a rotating motor passes through the wall of the hollow closed container and drives a vertical connecting rod to rotate horizontally, and a horizontal stirring rod is connected to the vertical connecting rod and extends below the liquid surface; an aeration plate is arranged coaxially below the vertical connecting rod, and the aeration plate is supported by and connected with one end of an aeration pipe extending from the bottom of the device; the other end of the aeration pipe passes through the device and is connected with the air outlet of a water-gas dual-purpose pump; one end of a residual liquid reflux pipe is connected with the residual liquid outlet provided at the lower part of the device, and the other end thereof is connected with the residual liquid inlet provided at the upper part of the device; the middle part of the residual liquid reflux pipe is also connected with the water inlet and outlet of the water-gas dual-purpose pump; wherein a plurality of aeration holes are arranged on the vertical side wall of the aeration plate.

[0012] Preferably, the rotating motor is connected to the vertical connecting rod via a rotating joint.

[0013] Preferably, a pH sensor penetrates from the top of the device into the interior thereof and extends below the liquid surface; and a pH detector is electrically connected to the pH sensor.

[0014] Preferably, the residual liquid reflux pipe connected to the water inlet of the water-gas dual-purpose pump is provided with an antimony solution water injection port, on which a water injection valve is provided.

[0015] Preferably, a alkali liquid tank is connected to the lower part of the device through a alkali liquid pipe.

[0016] Preferably, a alkali solution control pump is provided on the alkali solution pipe.

[0017] Preferably, the alkali solution control pump is electrically connected to the pH detector.

[0018] Preferably, a precipitant water inlet is provided on the wall surface at the same height as the residual liquid outlet.

[0019] Preferably, a crystal discharge outlet is also provided on the wall surface at the lower part of the device which is lower than the height of the residual liquid outlet.

[0020] Preferably, the device is suspended on a bracket.

[0021] The new antimony crystal recovery device provided in this case has the following beneficial effects:

[0022] 1) The device connects the reflux pipe and the aeration pipe through a water-steam dual-purpose pump to achieve the effect of fluidized crystal seeding, and reduces the operation steps, making the operation simple and convenient;

[0023] 2) The alkali solution control pump and the pH detector in the device work together to control the addition of acid and alkali to maintain the pH value in the water at the optimal crystallization state of antimony, thereby improving the crystallization efficiency;

[0024] 3) The water return pipe in the device can effectively avoid the problem of secondary pollution caused by the incomplete extraction of antimony in the sewage and its discharge;

[0025] 4) The horizontal stirring rod increases the horizontal horizontal fluidization process through horizontal stirring and horizontal horizontal aeration of the aeration plate, slows down the crystal sinking speed, and improves the crystallization efficiency, so as to overcome the problem of insufficient reaction of the simple vertical fluidization process of the traditional fluidization device, and can control the precipitation of crystals at the bottom of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the novel antimony crystal recovery device of the present invention;

[0027] Figure 2 This is a schematic cross-sectional view of the novel antimony crystal recovery device of the present invention;

[0028] Among them: 1-pH sensor; 2-pH detector; 3-rotating motor; 4-rotating joint; 5-vertical connecting rod; 6-horizontal stirring rod; 7-aeration plate; 8-alkali solution control pump; 9-alkali solution tank; 10-crystallization outlet; 11-water-gas dual-purpose pump; 12-aeration pipe; 13-residual liquid reflux pipe; 14-antimony solution water injection port; 15-water injection valve; 16-precipitant water inlet; 17-alkali solution pipe. DETAILED DESCRIPTION

[0029] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] See also Figure 1 and 2The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "top", "bottom", "upper", "lower", "inside", "outside", etc. quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0031] Embodiment 1:

[0032] The present invention provides a novel antimony crystal recovery device, which is a hollow closed container (a hollow closed container formed by connecting a cover to a container body by threads or other means), wherein an antimony solution to be crystallized is filled therein, and is characterized in that a rotating motor 3 passes through the wall of the hollow closed container to drive a vertical connecting rod 5 to rotate horizontally, and a horizontal stirring rod 6 is connected to the vertical connecting rod 5 and extends below the liquid surface; an aeration plate 7 is arranged coaxially below the vertical connecting rod 5, and the aeration plate 7 is supported by and connected to one end of an aeration pipe 12 extending from the bottom of the device; the other end of the aeration pipe 12 passes through the device and is connected to the air outlet of a water-gas dual-purpose pump 11; one end of a residual liquid reflux pipe 13 is connected to a residual liquid outlet provided at the lower part of the device, and the other end thereof is connected to a residual liquid inlet provided at the upper part of the device; the middle part of the residual liquid reflux pipe 13 is also connected to the water inlet and outlet of the water-gas dual-purpose pump 11; and a plurality of aeration holes are arranged on the vertical side wall of the aeration plate 7. The rotating motor 3 is connected to the vertical connecting rod 5 through a rotating joint 4. A pH sensor 1 is inserted into the device from the top and extends below the liquid surface. A pH detector 2 is electrically connected to the pH sensor 1. A residual liquid reflux pipe 13 connected to the water inlet of the water-gas dual-purpose pump 11 is provided with an antimony solution water injection port 14, on which a water injection valve 15 is provided. An alkali liquid tank 9 is connected to the lower part of the device through an alkali liquid pipe 17, and the alkali liquid pipe 17 is at the same height as the residual liquid reflux pipe outlet. An alkali liquid control pump 8 is provided on the alkali liquid pipe 17. The alkali liquid control pump 8 is electrically connected to the pH detector 2. A precipitant water inlet 16 is provided on the wall surface at the same height as the residual liquid outlet. A crystal discharge port 10 is also provided on the wall surface of the lower part of the device below the height of the residual liquid outlet. The device is suspended on a bracket.

[0033] Open the water injection valve 15, inject the antimony solution to be crystallized into the device through the antimony solution water injection port 14, and close the water injection valve 15;

[0034] Open the water inlet valve (not shown in the figure) provided on the precipitant water inlet 16, add the precipitant into the device through the precipitant water inlet 16, and close the water inlet valve;

[0035] The precipitant is added and then (driven by the rotating motor 3) the vertical rotating rod rotates to drive the horizontal stirring rod 6 to accelerate the precipitation of antimony crystals and the aeration plate 7 is horizontally aerated to accelerate the transverse fluidization. The residual liquid after the reaction flows back to the device through the water reflux pipe for recirculation to prevent the loss of uncrystallized antimony.

[0036] The pH of the solution will change during the crystallization process, and the pH of the solution needs to be detected by the pH detector 2-pH sensor 1. When the threshold value is reached and alkali solution (NaOH solution) needs to be added to adjust the pH, the pH detector 2 sends a start signal to the alkali solution control pump 8, and alkali solution is extracted from the alkali solution tank 9 until the pH required by the device is reached. The pH detector 2 controls the alkali solution control pump 8 to stop working. The pH detector 2 is used to keep the pH value in the water at the optimal crystallization state at all times. If the pH changes during the crystallization, the sodium hydroxide addition port will be automatically adjusted to add NaOH solution.

[0037] The water-gas dual-purpose pump 11 is to reduce the operation steps and simplify the device structure.

[0038] The residual liquid reflux pipe 13 is used to help the uncrystallized antimony ions that may be contained in the water flow to flow away, so that it can flow back again and increase the fluidization process.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A novel antimony crystal recovery device is a hollow closed container, which is filled with antimony solution to be crystallized, characterized in that: A rotating motor passes through the wall of the hollow closed container and drives a vertical connecting rod to rotate horizontally. A horizontal stirring rod is connected to the vertical connecting rod and extends below the liquid surface. An aeration plate is provided coaxially below the vertical connecting rod, and the aeration plate is supported and connected to the aeration plate by one end of an aeration pipe extending from the bottom of the device; the other end of the aeration pipe passes through the device and is connected to the outlet of the water-gas dual-purpose pump; One end of a residual liquid reflux pipe is connected to the residual liquid outlet located at the lower part of the device, and the other end is connected to the residual liquid inlet located at the upper part of the device; the middle part of the residual liquid reflux pipe is also connected to the inlet and outlet of the water-gas dual-purpose pump; wherein, a plurality of aeration holes are provided on the vertical side wall of the aeration plate.

2. The novel antimony crystal recovery device according to claim 1, characterized in that: The rotating motor is connected to the vertical connecting rod through a rotating joint.

3. The novel antimony crystal recovery device according to claim 2, characterized in that: A pH sensor is inserted into the interior of the device from the top and extends below the liquid surface; and a pH detector is electrically connected to the pH sensor.

4. The novel antimony crystal recovery device according to claim 3 is characterized in that: An antimony solution water injection port is arranged on the residual liquid reflux pipe connected to the water inlet of the water-gas dual-purpose pump, and a water injection valve is arranged on the residual liquid reflux pipe.

5. The novel antimony crystal recovery device according to claim 3 or 4, characterized in that: A lye tank is communicated with the lower part of the device through a lye pipe.

6. The novel antimony crystal recovery device according to claim 5, characterized in that: The alkali solution pipe is provided with an alkali solution control pump.

7. The novel antimony crystal recovery device according to claim 6, characterized in that: The alkali solution control pump is electrically connected to the pH detector.

8. The novel antimony crystal recovery device according to claim 7, characterized in that: A precipitant water inlet is arranged on the wall surface at the same height as the residual liquid outlet.

9. The novel antimony crystal recovery device according to claim 8, characterized in that: A crystallization outlet is also provided on the wall surface at the lower part of the device which is lower than the height of the residual liquid outlet.

10. The novel antimony crystal recovery device according to claim 1 or 9, characterized in that: The device is suspended on a bracket.

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